Each Siminar can have up to 21 Steps of content, but each Step can contain as many lesson items (Blog posts, Videos, Quizzes, Polls, etc.) as you like.
However, we strongly suggest limiting the number of lessons in each step to no more than 5, and limiting the number of steps in a single Siminar to around 7. More content that this will result in lower completion rates.
If you need more steps than that, we suggest creating a Bundle or Series of Siminars. This will allow you to organize content into smaller sets that make it easier for users to complete. Just sign up for one of our Retail or Private plans to create a Bundle or Series.